Keep getting the same error when compiling this driver. Using a 128X32 i2c OLED display with Arduino Mega 2560 using Arduino 1.0.3I have redownloaded and tried moving folders. ( I get separate errors when folders are not correct)Any ideas for a newbee?

The library supports different display sizes. You need to select which one you are using in Adafruit_SSD1306.h. For a 128x32 display, comment out the "#define SSD1306_128_64" and un-comment the "#define SSD1306_128_32" as below.